TNY254G-TL

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The TNY254G-TL is an offline flyback switcher and AC DC converter integrated circuit. This comprehensive device provides several integrated power management functions, making it suitable for many applications. It is designed to meet the requirements of different types of load, such as low power LED, LCD and lighting applications. The TNY254G-TL integrates a 1.2A high-side P-Channel MOSFET, a 100mA high-side N-Channel MOSFET, a low-side N- Channel MOSFET and a current-mode control scheme to provide a high level of protection against overload, overvoltage, overtemperature and short circuit. The device also includes an under-voltage lockout (UVLO) circuit to ensure that it only operates within its specified operating conditions. It provides a constant-current limited output voltage with a programmable threshold voltage, which can be adjusted with an external resistor. The device has built-in soft-start and short-circuit protection, and can be operated in pulse-skip mode at light loads. The TNY254G-TL is ideal for small offline applications such as LCD TVs, monitors, cell phone chargers, adapters, power supplies and lighting. It is also suitable for secondary applications such as automotive and industrial equipment, white goods, and other AC DC converters and switchers. The TNY254G-TL operates on an input voltage range of 85V AC to 265V AC and has a maximum output power of 75W. It also features an on-chip 650V MOSFET and an on-chip bootstrap diode, and is capable of providing high-efficiency operation over a wide load range. The working principle of the TNY254G-TL is simple. When the power supply is turned on, the high-side P-channel MOSFET conducts, allowing current to flow from the input supply to the primary side of the transformer. When the MOSFET turns off, the transformer stores the energy from the primary winding, which is then transferred to the secondary winding. This energy is rectified by a diode bridge and filtered through two capacitors, creating the output voltage. The TNY254G-TL is an excellent choice for many power management applications. Its streamlined design, high efficiency and safety features make it an ideal choice for powering a wide range of devices.

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